• January Turning Challenge: Thin-Stemmed Something! (click here for details)
  • Conversations are now Direct Messages (click here for details)
  • Congratulations to Gabriel Hoff for "Spalted Beech Round Bottom Box" being selected as Turning of the Week for January 6, 2024 (click here for details)
  • Welcome new registering member. Your username must be your real First and Last name (for example: John Doe). "Screen names" and "handles" are not allowed and your registration will be deleted if you don't use your real name. Also, do not use all caps nor all lower case.

nova xp and vacuum pump

M

Mike Quinn

Joined
Feb 10, 2009
Messages
3
Likes
0
I have a nova dvr xp lathe and am looking to hook up a vacuum system to it. I have a pump just need the adapter for connecting it to the lathe. I was wondering what people are using? There are no threads on the outboard side of the shaft just internal ones.

Thanks,
Mike
 
Mike
Teknatool makes a series of products that you might find useful, see here.

I use the hand-wheel and adapter, to a 1inch OD hose, that then adapts to a 3/4 NPT pipe, that is the bleed valve. Which is attached to an airfilter and then a 2.5 CFM pump. I can get 20 to 25 inches of vacuum.
 
I purchased the Teknatool handwheel and adaptor from Woodcraft last month (via their mail order site). Price was reasonable and fit and finish seemed good but... have had a hard time reaching 10" of pull.

n7bsn: Any secrets to getting 20"+? I have a similar setup (Nova handwheel, adaptor, and 2.5cfm pump) and have a hard time reaching 10". I believe have isolated the issue to the bearing, it doesn't seem to seal very well at all.
 
dmann said:
n7bsn: Any secrets to getting 20"+? I have a similar setup (Nova handwheel, adaptor, and 2.5cfm pump) and have a hard time reaching 10". I believe have isolated the issue to the bearing, it doesn't seem to seal very well at all.
Click to expand...

Take the chuck off and plug the hole through the shaft with your finger. If it's like mine you will get something like 25 inches.

The best vacuum I get is with a Holdfast chuck with the nylon washer between it and the head.

The worst was any method that didn't have a good seal between the chuck and the head.
 
dmann said:
I purchased the Teknatool handwheel and adaptor from Woodcraft last month (via their mail order site). Price was reasonable and fit and finish seemed good but... have had a hard time reaching 10" of pull.
Click to expand...

KMS Tools also has both in stock (Lathe Accessories, Nova 3000 Acccessories)
 
adapter is for vacuum cleaner

The adapter from technatool is for use with a wetdry vac and is designed to leak so it won't overheat the motor. This is what they told me when I could only pull a smaller vacuum. I went to the bearing store and bought a double shielded bearing the same size, turned down the threads of a brass fitting to a snug fit and epoxyied it into the bearing center. Just insert the bearing into the handwheel and tighten the set screw. You can hook up a quick disconnect fitting to your vacuum pump and voila 20 to 25 inches of vacuum.

Vernon
 
wa5fdf said:
The adapter from technatool is for use with a wetdry vac and is designed to leak so it won't overheat the motor. This is what they told me when I could only pull a smaller vacuum. I went to the bearing store and bought a double shielded bearing the same size, turned down the threads of a brass fitting to a snug fit and epoxyied it into the bearing center. Just insert the bearing into the handwheel and tighten the set screw. You can hook up a quick disconnect fitting to your vacuum pump and voila 20 to 25 inches of vacuum.

Vernon
Click to expand...

Mostly true. If you want to use a shop-vac, you leave one of the holes in the adapter open. This allows an air-draw that does cool the shop-vac motor.

If you cover the hole, you can draw a fairly hard vacuum (of course, don't do this with a Shop-Vac)
 
They are easy to make -- I have made several versions. I believe that there is an article on making your own in the summer AW journal.

Correction: the article is on making a vacuum chuck. Anyway they are very easy to make. All you need is a couple "2RS" ball bearing assemblies, a lamp rod, hose adapter, and some ingenuity to tailor one for your needs. By using a lamp rod, you can eliminate the need to seal the threads on the spindle.
 
Last edited:
You must log in or register to reply here.
Back
Top